Fig 1.
Course of the angular vein (arrowhead) in relation to the depressor supercilii (DS) in the upper face.
The angular vein passed through the DS fibers and descended to the medial palpebral ligament. OOc, orbicularis oculi; Zmi, zygomaticus minor; Zmj, zygomaticus major.
Fig 2.
Course of the angular vein (arrowheads) in relation to the OOc in the midface.
(A) The angular vein coursed along the deep surface of the inferior margin of the OOc. (B) When some inferior fibers (arrow) of the OOc were attached to the maxilla between the levator labii superioris alaeque nasi (LLSAN) and levator labii superioris (LLS), the angular vein coursed just above those fibers, and was covered by the inferior fibers of the OOc. The latter is slightly elevated to reveal the angular vein. OOr, orbicularis oris.
Fig 3.
Course of the angular vein (arrowheads) in relation to the Zmi, LLS, and Zmj in the midface.
At the level of the nasal ala, the angular vein passed between the LLS and Zmi (A), between the superficial and deep Zmi fibers (B), or between the Zmi and Zmj (C). LAO, levator anguli oris.
Fig 4.
Course of the angular vein (arrowheads) in relation to the buccal fat pad in the lower face.
(A) The angular vein coursed deep to the Zmj and lateral to the LAO. It passed through the anterior lobe of the buccal fat pad. Some of the buccal fat pad surrounding the angular or facial vein was removed to reveal those veins. (B) The anterior lobe of the buccal fat pad was reflected in the anterior view to show its posterior surface surrounding the angular or facial vein (arrow) and the parotid duct. The anterior lobe of the buccal fat pad was covered by the capsule, which divided it from the other lobes.